4 results for "Celestron C20 Astrograph" between $0 and $1400

The dovetail plate is made of machined solid aluminum, black anodized for good looks and durability. The plate has a dovetail flange on one side that fits into the 75mm dovetail slot in D-series saddle of the Losmandy G-11 or HGM Titan mounts; into a Losmandy GM-8 mount if equipped with a G-11 saddle plate; or into the saddle of a Celestron CGE go-to mount; as well as into AP and Casady saddle plates. The underside of the dovetail has had recesses machined out of it to reduce the weight without compromising...

With Astro-Tech Ritchey-Chrétiens, the scope’s focuser is used by itself or (more typically) in combination with one or both of the thread-in extension tubes that are supplied with the scope to place the camera at the astrograph’s focal plane. The weight of very heavy equipment trains (camera, plus filter wheel, plus temperature-compensated electric focuser, adaptive optics system, etc.) may cause the focuser drawtube to tilt slightly when fully extended, affecting the focus. The two threaded extension...